1.1 --- a/lemon/bits/alteration_notifier.h	Fri Oct 14 10:40:00 2005 +0000
     1.2 +++ b/lemon/bits/alteration_notifier.h	Fri Oct 14 10:44:49 2005 +0000
     1.3 @@ -139,9 +139,9 @@
     1.4        virtual void add(const Item&) = 0;
     1.5  
     1.6        /// \brief The member function to notificate the observer about 
     1.7 -      /// simulitem is added to the container.
     1.8 +      /// more item is added to the container.
     1.9        ///
    1.10 -      /// The add() member function notificates the observer about an item
    1.11 +      /// The add() member function notificates the observer about more item
    1.12        /// is added to the container. It have to be overrided in the
    1.13        /// subclasses.
    1.14  
    1.15 @@ -160,12 +160,34 @@
    1.16  	
    1.17        virtual void erase(const Item&) = 0;
    1.18  
    1.19 +      /// \brief The member function to notificate the observer about 
    1.20 +      /// more item is erased from the container.
    1.21 +      ///
    1.22 +      /// The erase() member function notificates the observer about more item
    1.23 +      /// is erased from the container. It have to be overrided in the
    1.24 +      /// subclasses.
    1.25        virtual void erase(const std::vector<Item>& items) {
    1.26  	for (int i = 0; i < (int)items.size(); ++i) {
    1.27  	  erase(items[i]);
    1.28  	}
    1.29        }
    1.30  
    1.31 +      /// \brief Signal a property change on the given item.
    1.32 +      ///
    1.33 +      /// Signal a property change on the given item. It should
    1.34 +      /// be used always with the commitChange() function.
    1.35 +      /// This function is called always the property change.
    1.36 +      /// The commitChange() is called always after the change.
    1.37 +      virtual void signalChange(const Item&) {}
    1.38 +
    1.39 +      /// \brief Commit the property change on the given item.
    1.40 +      ///
    1.41 +      /// Commit the property change on the given item. It should
    1.42 +      /// be used always with the signalChange() function.
    1.43 +      /// This function is called always the property change.
    1.44 +      /// The commitChange() is called always after the change.
    1.45 +      virtual void commitChange(const Item&) {}
    1.46 +
    1.47        /// \brief The member function to notificate the observer about the
    1.48        /// container is built.
    1.49        ///
    1.50 @@ -303,6 +325,31 @@
    1.51        }
    1.52      }
    1.53      
    1.54 +    /// \brief Signal a property change on the given item.
    1.55 +    ///
    1.56 +    /// Signal a property change on the given item. It should
    1.57 +    /// be used always with the commitChange() function.
    1.58 +    /// This function is called always the property change.
    1.59 +    /// The commitChange() is called always after the change.
    1.60 +    void signalChange(const Item& item) {
    1.61 +      typename Container::iterator it;
    1.62 +      for (it = container.begin(); it != container.end(); ++it) {
    1.63 +	(*it)->signalChange(item);
    1.64 +      }
    1.65 +    }
    1.66 +    
    1.67 +    /// \brief Commit the property change on the given item.
    1.68 +    ///
    1.69 +    /// Commit the property change on the given item. It should
    1.70 +    /// be used always with the signalChange() function.
    1.71 +    /// This function is called always the property change.
    1.72 +    /// The commitChange() is called always after the change.
    1.73 +    void commitChange(const Item& item) {
    1.74 +      typename Container::iterator it;
    1.75 +      for (it = container.begin(); it != container.end(); ++it) {
    1.76 +	(*it)->commitChange(item);
    1.77 +      }
    1.78 +    }
    1.79  
    1.80      /// \brief Notifies all the registered observers about the container is 
    1.81      /// built.